Onion juice has gained attention as a potential natural remedy for hair loss, with studies and anecdotal evidence suggesting it may support hair regrowth. Research indicates that onions contain , a key component of keratin, which strengthens hair structure and promotes follicle health. A 2002 study found that applying onion juice twice daily led to visible hair regrowth in 74% of participants after two weeks, with 87% showing improvement by week eight. The of onions may also combat scalp infections that contribute to hair loss.
To use onion juice:
1. Blend a red onion and strain the liquid through cheesecloth.
2. Massage the juice into the scalp for 2–3 minutes, leaving it on for 30–60 minutes before rinsing.
3. Repeat twice weekly for 4–6 weeks.
Adding (5 drops per application) may enhance results, as studies show it boosts blood flow to the scalp and matches the effectiveness of some medications. Fermenting the juice with salt and honey for 72 hours could increase quercetin levels, an antioxidant that supports follicle growth in autoimmune-related hair loss.
While promising, onion juice isn’t a cure for genetic baldness or severe alopecia. It works best for thinning caused by nutrient deficiencies or mild scalp conditions. Results vary, and consistent use is required. For persistent hair loss, consult a dermatologist to explore treatments like minoxidil or finasteride.